Process for refining flour.



H.J3UCKLEY. PROCESS POR REFINING PLOUR.

APPLIGATION FILED-11211.15. 191s' y Pamenxed naar.24,1914

nNirED STATES PATENT oFrucE.

HARRY BUCKLEY, or LoUIsvILLnKENTUCKY.

PROCESS Fon EFINING FLOUR.'

Specification of Letters Patent.

i' Patent-.eu Mar. 24,1914.

application ined April 15, 191'3. summe-761,223;

To all whom, it dy concern: Y

Be it known that I, HARRY BUcKnnY, a citizen of the United States, and a resident of theycity of Louisville and 'State of Kentucky, 'have invented new and useful lm proveme'nts 'in Processes -for Refining Flour, ofwhich the following isa specification. l

This invention relates tothe refining by mechanical treatment `of .finishedl our of the grades commonly' found' on'the market, and is'applicable both-in the -rnill at'the time of making thel flour,.either in connection with the-machinery used-in making the lfiour or separately therefrom, and at any time thereafter in the same or any other" mill. f v

The object of thislinvention is t'o reduce from any grade' of flour a white'rA our ofY more uniform 4teXfture,'by a' process which leaves the iiour with its full gluten content and free from impurit1es.'

.t further-(abject of the invention is'to.

reduce the size of the coarser flour vparticles to that of the finer particles so .that all the Hour particles shall be of uniform fineness -and smaller than the average. size of .th-eparticles of-the Hourin' its`or1ginal condiv tion Afurther object of this invention is to increase themill output `of patent or best grade flour by thefmprovement Aof all 'or nearly all of the flour produced in a'mill' so thatv it Aequalsin co'lorand quality 'thel best grade formerly produced; 'whereby the' hour was ori 'inallv made then reducin .org

pulverizing the portion ofthe flour' that comes through this coarser cloth so that it will bolt through the fine cloth and sending itibaclrinto th-e stream entering the fine cloth for rebolting. The portion of the flour that goes over the coarse cloth, is reduced or puliteriz'ed in. suitable machinery and sent 4ing' (Figure l'land. diagram then y back into the main-mill stream .for scalping'v land y'further bolting before being againsub- ]ect-ed to the'treatment upon a fine cloth and coarse cloth, as above described.

better' understanding of this process -60 maybe obtained by referenceto the dreivi-A (Fia-2) ac* companyi-ng this specification. l

In thJ `drawing the several devices and-` p'arts thereof. are respectively designated by 65 "reference numerals by 'which they are re" ferred to throughout'the description.

Referring 'to the drawing (Fig. l), the flour to berefined. is conducted from the mill upon which it was made, or from a storage 70"' 'bin l, to the head end ofnarcentrifugal reel 2, or other suitable sifting or bolting device,4 clothed for the most Ipart.w'ithane mesh bo'ltingcloth 3, which .is finer than the average-mesh ofthe .cloths in the mill on4 75 which lthe Hour was originally made.

l The tail end of the reelor sifter `2 is 'clothed `with a coai'sercloth thanthe average mesh 4of the cloth on which vthe flour' was originally made. For'example, No. lXX and 8G l VNo. llXX-silk would be suitablecloths for a refining apparatus treatingsoft'winter wheat fiour. .The f iourwhich passes through the finec-lotli' 3 is. finished flour 'and may be 4sent directlytothe packer 5, or 4to a fiour 85 bin, or to a bleaching/apparatus if the flour Ais to Ibe bleached. 'The 'fl-our' which passes through the coarse cloth 4 is further'treated 4* bypassing it through the reducing and pul Yerizing machine described in my Patent,

' No. 1,060,739, ,dated May', `1913, forreductionto'a size which will pass through the fine cloth 3; or `it may be treated in any other machine whichis capable yof reducing or pulverizingfthe stoclnto this degree of neness without shredding the fibrous content thereof. From theA reducing machine 6 the flour is ser'itbaclr` to the head'end'of the reel -o'r sitter 2 and? the bolting process is repeated.' The tailings passing through the 100 reel'lor sifter Q'are sent to a machine 7' such as that described in my Patent'N'o. 1,960,739,

or to any'machine which can make a reduction von this ycharacter of4 stock without shredding the fibrous matter -therein contained, land then to thevsecend middlings or other section 8uof1sifter, or to the reel handling second or other middlings in the flour mill, to be scalped and bolted.- The tailings from thel reel or sifter 2 are thus reduced 110 Y' sep'aratedyand: returned to the mill to be further.' actedupon thereby@ Whatever v-paratus such, as illustrated cally in F ig. Zmay be' used.-

'good flour is containd'thereinis sifted-out and'eventually' rea-ches'the bin l and 1sv` againL sent through the finishing mechanism above described.

' v yFor refining flourbythis process after leaves the mill Where it Wa's'made, an: ap-

The apparatus illustrated in' Fig. 2 is similar to that 'shown 4 inFig. land already described, except that `a second centrifugal re'el or other sifting device yis,'required.t0-handle the tailings from the first-reehintheplace .of the section'B of millas shown in Fig. 1.

.2F-hel tailings from the rstreel, insteadof go1ng-back"-into theinill for further treatf ment,v are sent throughthe reducing .machineb [orf pulverizerand into' the second'reel. The

head end of thel second reel is. clothed with a cloth of' the same Vas or' slightly' coarser mesh than the cloth on the, headeend of -the first" reel', andthe ta'il end 4of the second reell `25. thehead endv isclothed with a coarse'rcloth than thaton' of this reel.- The iineflour v,vhich^"passes" through the fine cloth on the second reelis sent be rebolted;

passes through-the clothon the tailend of thesecond. reel issnt throughthe reducing'` end of the reel-and r ebolted 4iai-the secondi'reel.' The tailings machine at thehead- 'fromjthe second reel are-sent to the feed-bin.' In Fig." 2 the" two reels are illustrated as clothed with Nos.v lfiXXv and llXX bolting c1othand'1XX and-.SXX boltin'g4 cloth respectively, vwhich cloths wouldbe suitable for refining flour" ma de from soft Wheat. Cloth of other -meshor fineness. maybe used 1n refining our made 'from' other` Wheat, as

will be readily understood by those'familiar of this with milling. 1 Whether carried out at the time o f'makingtheflour or later,the result processv is, first, to put all of. the flour in'conditionso that it'boltsthrough la finer cloth vthan the average of' the cloths on crept into 1t, together 'with'branfchips and' Whichit'fvgras originally made; and, second, to 'remove from the fiour any strings, bugs or other fpreign matter which may have other v impurities-2 which may have found their Way into the iour through holes' in bolting cloths or. leaky sieves, Removing of the fiouf particles make the flour Whiter and improve its baking quality,

impurities and reducing the size and bolting the finished flour all through the same fine cloth makes it uniform.

The reduction of the flour particles to a small and uniform size assists in causing the flour to absorb Water uniformly, and ree suits in the production of a larger loaf of bread of better texture than one made from thesame quantityA of untreated flour. Morediagramination a-cloth of the same back. tof-the firstv reel to vand -the coarse flou-r Whichcloth than ,theaverage mesh of the cloths l consists in bolting 1t upon a thatupon which it was `made and then upon over, flour refined-by this process sours less quickly' and holds lts shape better in the process of baking than untreated fiour, on

account of the fact that the impurities re` moved by this process have a diastatic actionon theflour and also interfere with the proper fermenting of the loaf in thebaking.

`Although 4this process has been described as 'carried out by means of machines of certain types, it is not restricted in its application-tothe machines described, but may' be carried `out by any suitable machines.

\Wha t I claim as my invention and desire to 'secure by Letters Patent is:

l. The process lof' refining flour which consists in rebolting all saidiour on a finer is bolte'dfthrough cloths ofthe same degree of' fineness. 2. The process of refining flour which consistsin rebolting alldsaid flour on a finer cloth than the average mesh of the cloths on-whichsaid flour was originally made, re- 'bolting-the portion of the flour which will not gothrough said fine clothon a' c`oarser on which the lflour was. originally made, reducing the portion of theflour that comes `throughsaid'coarser cloth and rebolting it on a cloth of the same fineness as said liner` cloth, `reducing the portionof the flour thatgoes' over theI coarse cloth and returningit to the millto be rerun,'whereby' all the refined 'flour is bolted-through cloths of the same degree of fineness.

3.A The process of rrefinin flour". which gner cloth than a oarser cloth, treating the portion passed through the coarser cloth to reduce the size lof its particles and upon said liner cloth.

4. The process of refining Hour 'made in a mill-Which consists in'bolting it successively upon a fine cloth and a coarse cloth, treating the portion passed over the coarse cloth to reduce the size of its particles Withrebolting said portion out shredding the fibrous content thereof,

separating out saidl fibrous content and`re- -bolting the remalnlng portion on some reel or section of sifter in the mill proper.

5. The process of refining flour which consists in bolting successively upon a fine clothand a coarse cloth, treating the portion passed over the coarse cloth to reduce the slze of its. particles without shredding the ibrous content thereof, separating out sid the fiour-nmking material, and returning the 10 Sists in passing it successively over a line clay of April, 1913.

fibrous content and rebolting the remaining remaining portion, mingled with other Hour, portion upon said fine cloth. to Said fine cloth to be bolted.

6, The process of reiining iiour which con- Signed at Louisville, Kentucky, this 10th cloth and a coarse cloth, treating the portion HARRY BUCKLEY, which passes over the coarse cloth to reduce Witnesses: to flour the flour-making content thereof, RAY BUoKLny, separating the brous matter and dirt from MARY LOUISE KANNAPELL. 

